Hi Rama,
My current req is similar to the previous req if u remember ( displaying alv with select-options n radio buttons ).
Here in the component usage interface controller, the external mapping is already done.
( what I did is I copied the previous component into a new one and removed my ALV from 1st view and placed it in 2nd view and embedded in window )
PS:- As u said, it's the first possibilities but the binding is already done.